On Halloween last year, a man that had only been out of prison for a few months came to our school. He talked about how he has brain disease because he had sex and did drugs. He claimed that green stuff came out of his penis. He also would scream FAMILY at random and we had to say how are you? unanimously. It's become a bit of a running joke to this day at school. I don't think it was safe to bring him into a school nor was it effective in teaching us about sex.